在使用Windows应用程序认证工具包（WACK）测试我的Java应用程序安装程序（由install4j 7.x构建）期间， i4jinst.dll 文件被标记为警告没有有效的签名（通过嵌入或通过目录文件）。如何解决此警告？ DLL是否应该未签名？
确切的警告是：
Digitally signed file test
WARNING
Install signed driver and executable files
All unsigned files of the following extensions: EXEs, DLLs, SYS, DRV, OCX, SCR, and CPL will be reported.
Warning: The file, driver signing test detected the following errors:
Non-driver file {install directory}\.install4j\i4jinst.dll does not have a valid signature, either embedded or via a catalog file.